4  5  8  0
0.5  150.  1.0  50.  850. 
18495.   12.318   -107.865
22680.   12.348   -107.883
26086.   12.342   -107.895
30248.   12.405   -107.907
 17311.   31481.
17311.   18453. 
18457.   19683. 
21362.   22665. 
22678.   23909. 
24900.   26076. 
26102.   27262. 
29036.   30211. 
30222.   31481.